import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
  // 在页面重定向时读取sessionStorage里的状态信息
  // if (sessionStorage.getItem("store")) {
  //   store.replaceState(
  //     Object.assign(
  //       {},
  //       store.state,
  //       JSON.parse(sessionStorage.getItem("store"))
  //     )
  //   );
  //   // 数据给store后清除SessionStorage中的内容
  //   // sessionStorage.removeItem('store');
  //   // console.log(this.$store);
  // }

  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  // 如果cookie中的token为空，则设置为state中的token，如果同时为空，则为FALSE
  var hasToken = false
  if (getToken()) {
    // 如果从cookies中能拿到token
    hasToken = true
  } else if (store.getters.token) {
    console.log(store.getters.token)
    hasToken = true
  }
  console.log('hasToken:' + hasToken)
  console.log('token:' + store.getters.token)

  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done() // hack: https://github.com/PanJiaChen/vue-element-admin/pull/2939
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      const hasRoles = store.getters.roles && store.getters.roles.length > 0
      console.log('hasRoles:' + hasRoles)
      console.log('token:' + store.state.user.token)

      if (hasRoles) {
        // console.log(hasRoles);
        // generate accessible routes map based on roles
        // const accessRoutes = await store.dispatch('permission/generateRoutes', store.getters.roles)

        // // dynamically add accessible routes
        // router.addRoutes()
        next()
      } else {
        try {
          // console.log(hasRoles);
          // get user info
          // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
          // const { roles } =
          await store.dispatch('user/getInfo')

          console.log('permission')
          // console.log(await store.dispatch('user/getInfo'));

          console.log(store.state.user.roles)
          // generate accessible routes map based on roles
          const accessRoutes = await store.dispatch('permission/generateRoutes', store.state.user.roles)

          // dynamically add accessible routes
          router.addRoutes(accessRoutes)

          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({ ...to, replace: true })
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
